EP 0465089 B1 20000823 - Automated channel test unit
Title (en)
Automated channel test unit
Title (de)
Automatische Kanaltesteinheit
Title (fr)
Test automatique d'unité de canal
Publication
Application
Priority
US 54846490 A 19900703
Abstract (en)
[origin: CA2041501A1] AUTOMATED CHANNEL TEST UNIT Disclosed is a circuit for the automatic testing of channel units such as found in subscriber loop carrier (SLC?) systems. The circuit is included as part of the remote terminal of the system and performs type tests, power-up tests and routine verification tests. The circuit also monitors the subscriber channel, and connects the subscriber in the event of a ringing signal or an off-hook during a test. The results of the test are sent to a display unit which can be located at the remote terminal and/or the central office.
IPC 1-7
IPC 8 full level
H04M 1/24 (2006.01); H04M 3/26 (2006.01); H04M 3/30 (2006.01); H04Q 1/24 (2006.01)
CPC (source: EP KR US)
H04L 12/42 (2013.01 - KR); H04M 1/24 (2013.01 - EP US); H04M 3/301 (2013.01 - EP US); H04M 3/303 (2013.01 - EP US); H04M 2203/058 (2013.01 - EP US)
Designated contracting state (EPC)
GB IT
DOCDB simple family (publication)
US 5018184 A 19910521; AU 625652 B2 19920716; AU 7839091 A 19920109; CA 2041501 A1 19920104; CA 2041501 C 19950207; EP 0465089 A2 19920108; EP 0465089 A3 19930616; EP 0465089 B1 20000823; EP 0989718 A2 20000329; EP 0989718 A3 20010117; JP 2648406 B2 19970827; JP H04233856 A 19920821; KR 100237094 B1 20000115; KR 920003701 A 19920229
DOCDB simple family (application)
US 54846490 A 19900703; AU 7839091 A 19910613; CA 2041501 A 19910430; EP 91305727 A 19910625; EP 99125976 A 19910625; JP 17187791 A 19910618; KR 910010756 A 19910627